Taiwan Semiconductor Corporation KBU1007G T0G

Overview

KBU1007G from Taiwan Semiconductor is a 10A, 1000V standard bridge rectifier in KBU package, featuring glass-passivated junctions, 200A surge capability, and <0.1μA typical reverse leakage at 25°C; used in high-reliability AC/DC front-ends for industrial SMPS and LED drivers.

For engineers reviewing the KBU1007G datasheet, KBU1007G pinout, KBU1007G application, or KBU1007G equivalent, key selection criteria include peak reverse voltage (1000V), average forward current (10A), thermal resistance (R_θJC = 2.2°C/W), and UL recognition (E-326243) for safety-critical power conversion designs.

Technical Context

The KBU1007G integrates four silicon diodes in a single-phase full-wave bridge configuration with quad-terminal layout. Its glass-passivated junction ensures stable reverse characteristics up to 150°C junction temperature and low IR drift across temperature.

Designed for PCB mounting with matte tin-plated leads compliant with J-STD-002, it delivers 166 A²s fusing rating under 8.3ms surge and meets UL 94V-0 flammability and JESD201 Class 1A whisker requirements.

Key Specifications

Pinout & Package

Package: KBU - molded plastic case with 4 axial leads (AC1, AC2, +, –), UL 94V-0 rated, 7.2g weight, 0.56 N·m max mounting torque.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bridge rectifier applications.

Compared with GBU10J and W10M, the KBU1007G offers the lowest junction-to-case thermal resistance (2.2°C/W) and tightest reverse leakage spec (<0.1μA), making it optimal for thermally dense or low-standby-loss designs where UL recognition is mandatory.

Availability

KBU1007G is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, LED driver front-ends, and AC/DC adapters requiring stable component supply, long-lifecycle assurance, and certified safety compliance.

Supply support for KBU1007G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power, automotive, and industrial markets since 1979.

The KBU1007G belongs to TSC's standard bridge rectifier product line, engineered for high-surge, high-reliability AC/DC conversion in cost-sensitive yet safety-critical applications such as industrial power supplies and lighting systems.

FAQ

What is the maximum junction temperature rating for the KBU1007G?

The KBU1007G has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet (Version J2103). This allows continuous operation in high-ambient environments when thermal design respects R_θJC = 2.2°C/W and proper heatsinking is applied. The KBU1007G must not exceed this limit to maintain reliability and avoid parametric shift.

Does the KBU1007G meet RoHS and UL safety requirements?

Yes, the KBU1007G is RoHS compliant and UL Recognized under File # E-326243, as confirmed in the "Features" section of the Taiwan Semiconductor datasheet. These certifications apply specifically to the KBU1007G variant and support compliance for end equipment sold in North America and the EU. The KBU1007G's UL recognition covers construction, flammability (UL 94V-0), and electrical safety testing.

What is the forward voltage drop of the KBU1007G at full rated current?

At I_F = 10A and T_J = 25°C, the KBU1007G exhibits a maximum forward voltage drop of 1.1 V per diode (2.2 V total bridge drop), per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3ms) and represents worst-case conduction loss during steady-state operation. Real-world drop may be lower at reduced load or elevated temperature.

Can the KBU1007G replace the KBU1006G in an existing design?

Yes - the KBU1007G is a direct upgrade from the KBU1006G (800V) with identical package (KBU), pinout, thermal specs, and current ratings; only V_RRM increases from 800V to 1000V. No PCB or thermal redesign is needed. The KBU1007G maintains the same marking, lead finish, and mechanical dimensions, making it a safe drop-in replacement where higher reverse voltage margin is required.

What is the surge current rating of the KBU1007G and how is it defined?

The KBU1007G has a non-repetitive peak forward surge current (I_FSM) rating of 200 A, defined for an 8.3ms single half-sine waveform superimposed on rated DC load. This rating is validated per JEDEC standards and reflects the device's ability to survive inrush currents during AC power-up. The KBU1007G also specifies a fusing I²t of 166 A²s for t < 8.3ms, supporting robust transient handling in SMPS front-ends.